CVE-2026-33410

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have two authorization issues in the chat direct message API. First, when creating a direct message channel or adding users to an existing one, the targetgroups parameter was passed direct...

CVE-2026-33355 Discourse filters whisper posts from private-posts feed

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the /private-posts endpoint did not apply post-type visibility filtering, allowing regular PM participants to see whisper posts in PM topics they had access to. Versions 2026.3.0-latest.1...

CVE-2026-33355

Discourse (open-source) is affected by CVE-2026-33355. The vulnerability affects the /private-posts endpoint where post-type visibility filtering was not applied, enabling regular PM participants to see whisper posts in PM topics to which they had access. Affected versions are 2026.3.0-latest.1, ...

CVE-2026-33355

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the /private-posts endpoint did not apply post-type visibility filtering, allowing regular PM participants to see whisper posts in PM topics they had access to. Versions 2026.3.0-latest.1...

CVE-2026-33355 Discourse filters whisper posts from private-posts feed

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the /private-posts endpoint did not apply post-type visibility filtering, allowing regular PM participants to see whisper posts in PM topics they had access to. Versions 2026.3.0-latest.1...

CVE-2026-33355 Discourse filters whisper posts from private-posts feed

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the /private-posts endpoint did not apply post-type visibility filtering, allowing regular PM participants to see whisper posts in PM topics they had access to. Versions 2026.3.0-latest.1...

EUVD-2026-13337

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the /private-posts endpoint did not apply post-type visibility filtering, allowing regular PM participants to see whisper posts in PM topics they had access to. Versions 2026.3.0-latest.1...

EUVD-2026-13341

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have two authorization issues in the chat direct message API. First, when creating a direct message channel or adding users to an existing one, the targetgroups parameter was passed direct...

CVE-2026-33410

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have two authorization issues in the chat direct message API. First, when creating a direct message channel or adding users to an existing one, the targetgroups parameter was passed direct...

CVE-2026-33410 Discourse hardens chat DM channel creation and expansion

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have two authorization issues in the chat direct message API. First, when creating a direct message channel or adding users to an existing one, the targetgroups parameter was passed direct...

CVE-2026-33410

Summary: CVE-2026-33410 affects Discourse before patches 2026.3.0-latest.1, 2026.2.1, and 2026.1.2. There are two authorization issues in the chat direct message API. First, during direct message channel creation or when adding users, the target_groups parameter is passed directly to the user res...

CVE-2026-33410 Discourse hardens chat DM channel creation and expansion

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have two authorization issues in the chat direct message API. First, when creating a direct message channel or adding users to an existing one, the targetgroups parameter was passed direct...

CVE-2026-33410 Discourse hardens chat DM channel creation and expansion

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have two authorization issues in the chat direct message API. First, when creating a direct message channel or adding users to an existing one, the targetgroups parameter was passed direct...

CVE-2026-27934 Discourse leaks private topic title and post excerpt via user action API endpoint

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a lack of visibility checks with a user action API endpoint that results in disclosure of the title and post excerpt to unauthorized users, leading to information disclosure. Versions...

EUVD-2026-13196

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a lack of visibility checks with a user action API endpoint that results in disclosure of the title and post excerpt to unauthorized users, leading to information disclosure. Versions...

CVE-2026-27934 Discourse leaks private topic title and post excerpt via user action API endpoint

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a lack of visibility checks with a user action API endpoint that results in disclosure of the title and post excerpt to unauthorized users, leading to information disclosure. Versions...

CVE-2026-27934

Discourse versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 expose topic titles and post excerpts through a user action API endpoint to unauthorized users due to missing visibility checks. The issue enables information disclosure with a CVSS 4.0 base score of 8.7 (HIGH) and no user inte...

How Ceros Gives Security Teams Visibility and Control in Claude Code

Security teams have spent years building identity and access controls for human users and service accounts. But a new category of actor has quietly entered most enterprise environments, and it operates entirely outside those controls. Claude Code, Anthropic's AI coding agent, is now running acros...

PT-2026-26370

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.3.0-latest.1 Discourse versions prior to 2026.2.1 Discourse versions prior to 2026.1.2 Description Discourse, an open-source discussion platform, is affected by an information disclosure issue. A lack of...

PT-2026-26424

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.3.0-latest.1 Discourse versions prior to 2026.2.1 Discourse versions prior to 2026.1.2 Description Discourse is an open-source discussion platform. The /private-posts API endpoint did not apply post-type...